Finding the Fourth Proportional to 2,992.64, 4,131.72 and 1,930.94

Step by Step Solution

1. Step 1: Write the proportion equation
   2,992.64 : 4,131.72 = 1,930.94 : x
2. Step 2: Convert to fraction form
   2,992.64/4,131.72 = 1,930.94/x
3. Step 3: Cross multiply
   2,992.64x = 4,131.72 × 1,930.94
4. Step 4: Simplify right side
   2,992.64x = 7,978,103.42
5. Step 5: Solve for x
   x = 7,978,103.42/2,992.64
6. Step 6: Final answer
   x = 2,665.91